Consultation on Proposed Occupational Exposure Limits based on the New or Revised 2013, 2014 and 2015 ACGIH TLVs

Each year, the American Conference of Governmental Industrial Hygienists (ACGIH) publishes a list of substances for which they have set new or revised Threshold Limit Values (TLVs). A TLV is an airborne concentration of a chemical substance where nearly all workers are believed to experience no adverse health effects over a working lifetime. TLVs may be expressed as an 8-hour time-weighted average, short-term exposure limit or ceiling limit.

Prior to the adoption of new or revised TLVs published by the ACGIH, WorkSafeBC reviews and consults stakeholders on potential implementation issues. WorkSafeBC’s existing B.C. Occupational Exposure Limits (OELs) continue to be in effect until the Board of Directors makes a decision on which new or revised ACGIH TLVs to adopt as B.C. OELs.

  • Background information on WorkSafeBC’s OEL review process

WorkSafeBC is requesting stakeholder feedback on proposed OELs based on the 2013, 2014, and 2015 new or revised ACGIH TLVs.

WorkSafeBC proposes new or revised OELs for the following substances:

Acetone 1-Methoxy-2-propanol
Aliphatic hydrocarbon gases, Alkanes Methyl formate
Atrazine Methyl isoamyl ketone
Barium sulfate Methyl isocyanate
1-Bromopropane Naphthalene
Butane, all isomers Oxalic acid, anhydrous and dihydrate
Ethyl isocyanate Pentane, all isomers
Ethyl tert-butyl ether Phenyl isocyanate
Glycerin mist Trichloroacetic acid
Manganese, elemental and inorganic compounds, as Mn Triethylamine

WorkSafeBC proposes to retain the OELs for the following substances:

Clopidol Methomyl
Cyanogen bromide Nickel carbonyl, as Ni
2,4 – Dichlorophenoxyacetic acid and its esters Pentachlorophenol
Diethylene glycol monobutyl ether Peracetic acid
N,N-Diethylhydroxylamine Tributyl phosphate
Lithium hydride 1,2,3-Trichloropropane

WorkSafeBC also proposes a withdrawal of the OEL for Ethylidene norbornene.

Online feedback: This consultation is now closed
Fax: 604.279.7599
or toll-free in B.C. 1.877.279.7599
Mail: Policy, Regulation and Research Division
P.O. Box 5350, Station Terminal
Vancouver BC V6B 5L5

Your feedback is appreciated by 4:30 p.m., Friday, September 1, 2017.

To make a written submission

Please include the following information in your written feedback:

  • Name of submitter(s);
  • Whether you are submitting on your own behalf or on behalf of an organization (if on behalf of an organization, please specify the name of the organization);
  • Whether you are commenting from a worker’s perspective or an employer’s perspective;
  • Your level of support for the adoption of the proposed new or revised OELs, retention of OELs, and OEL withdrawal - whether you generally agree, are generally neutral, or generally disagree; and,
  • The reasons for your level of support for the substances you are commenting on.

Stakeholder feedback

All stakeholder feedback received will be carefully considered and analyzed, and provided to the Board of Directors of WorkSafeBC as part of their decision making process.

Please note that all comments become part of the Policy, Regulation and Research Division's database and may be published, including the identity of organizations and those participating on behalf of organizations. The identity of those who have participated on their own behalf will be kept confidential according to the provisions of the Freedom of Information and Protection of Privacy Act.